baber/WOPTO huggingface dataset:
Patent GB-471732-A (GB)
Title: Improvements in packing heads for wells
IPC: E21B33/06
Filed: 1935-12-05
Abstract: 471,732. Packing - heads for wells. HYDRIL CO. Dec. 5, 1935, No. 33787. Convention date, Nov. 19. [Class 85] [Also in Group XXVI] A packing-head for a well comprises a contractible packer disposed about the work and a packer contractor movable vertically relative thereto under external control, the contractor having a tapered surface engaging the packer with a wedging action to contract it about the work. A further packer may be provided adapted to actuate the packer if a sudden increase of well pressure occurs. In Fig. 1, a housing 23 on the well casing has differential bores 24, 25 connected by a doubletapered shoulder 26 and receives a head 27 with a depending sleeve 27b ; a rubber packer 34, with an annular groove 40 in its lower end, is connected by reinforcing cables 47 to a ring 45 held to sleeve 27b by balls 46. An internally tapered differential piston 44 fits the bores 24 25 and supports a floating piston 54 of larger area than the lower end of piston 44 ; keys 56 are provided so that the pistons are removable with the packer &c. Means such as screws 57 limit movement of the pistons and a position indicator 60 is provided. Fluid, which may be from the well, is admitted through pipe 96 to raise the pistons and compress the packer, or through pipe 97 to lower the pistons &c. To enable the device to act as a blow-out preventer, the piston 44 may carry a further packing 64 which raises the piston 44 automatically on increase of the well pressure. The packing 64 may comprise superposed rubber rings 68 loosely connected by pins 72 to staggered members of upper and lower sectional rings 70, 71, to allow passage of pipe couplings 43a ; alternatively, the packing 64 may comprise a rubber ring 78, Fig. 7, held between internally -tapered segmental rings 79, 80, centred by strips 188, or it may comprise a loosely held ring 81, Fig. 8, moulded round a perforated tube 84 and provided with a lip 85 with a tapered upper surface. In Fig. 10, the main packer is carried by a sleeve 102 rotating on ball bearings 103, 105, and provided with a sleeve 107 for driving connection to a non- circular stem 100. Two packing heads may be arranged one above the other and after a drill collar passes into the space between the heads, it may actuate a radially-movable member to close a switch to operate signalling means. In .Fig. 16, after a drill collar has passed up through lower packing head 146, it operates switch 148 and closes a circuit through solenoid 163a to act through rack 162a, and pinion 161a to reverse valve 154 and apply the packer in head 146 ; when the packer is fully applied, indicator rod 60, Fig. 1, closes switch 170a, Fig. 16, to energize solenoid 164 and, through rack 162 and pinion 161, reverse valve 153 to free the packer in upper head 145. After lifting the pipe, switch 168 is reversed and switch 173 closed to reverse the valves 153, 154 in turn through solenoids 164, 164a. Switch 173 is then again opened. Specifications 471,793, 471,794, and 471,795 are referred to.
Patent GB-419169-A (GB)
Title: Improvements in or relating to billiard tables
IPC: A63D15/00
Filed: 1933-12-01
Abstract: 419,169. Billiard tables. ETABLISSEMENTS O. WAMBREUSE ET CIE SOC. COOPERATIVE, 41, Rue Pasteur, Brussels. Dec. 1, 1933, No. 33825. Convention date, March 30. [Class 132 (ii).] A billiard table made of metal such as steel comprises a metal bed 1 having edges 2 resting on a metal frame 3 mounted on the shoulders 8 of side members 4 supported by legs 5 of metal tubing trussed by cross members 6 having four arms 7 which, together with the legs 5, engage in cups 23. The bed 1 is held in position by filling members 10 of resilient steel, and is firmly keyed by the cushion rails 11 which are formed of steel tubes having a rubber cushion 12 and are wedged under ledges 9. Bolts 13 and corner pieces 14 secure the sides 4, 41 and the legs 5. The leg 5 is freed by loosening the nut 21 and pulling the leg downwards to disengage notches 19 from the bolt 13. The balls falling through holes 24 and sleeves 26 pass down an incline 27, accessible through a hinged shutter 29, to two one-way gates 32, 36 separated by a rack 35 which can only be lifted by starting the meter at the beginning of a game, the balls being imprisoned by the rack when the predetermined time has elapsed. In a modified table, Fig. 9, having flat steel sheet sides 46, these are secured to the legs 53 without the use of bolts and nuts, the joint being obtained by the engagement of angle pieces 54 on the sides with angle pieces 55 on the legs and by the engagement of the wall of the tubular leg between the angle pieces 54 and the inturned edges 57 of the sides.
Patent GB-771499-A (GB)
Title: Improvements relating to the examination of textile threads
IPC: B65H63/06
Filed: 1954-11-23
Abstract: 771,499. Electric tests. SCHOLTEN & ZONEN CURACAO N.V., J. F. Nov. 23, 1954 [Nov. 24, 1953], No. 33958/54. Class 37. [Also in Group XL (c)] Apparatus for locating slubs in textile thread comprises a valve oscillator circuit 6, 7 (Fig. 1) having a test condenser either in the tank circuit 7, or in a negative feedback circuit 9 whereby the passage of a slub between the plates of the condenser produces a change in the frequency or amplitude of oscillation which is fed through a condenser 11 to a thyratron 2, causing it to fire and operate a relay 13 which cuts the thread so that the slub may be removed. Alternatively the negative feedback via 8, 9 is normally sufficient to stop oscillation, which only occurs when a slub appears between the plates of condenser 9, and the relay 13 may be located directly in the anode circuit of the oscillating valve 1. The apparatus may also be used to locate thin portions of thread.
Patent GB-1142511-A (GB)
Title: High pressure discharge lamps
IPC: H01J61/18
Filed: 1966-07-28
Abstract: 1,142,511. Metal vapour lamps. TOKYO SHIBAURA ELECTRIC CO. Ltd. 28 July, 1966 [28 July, 1965; 28 Dec., 1965(2)], No. 34030/66. Heading H1D. A high-pressure discharge lamp contains a filling of inert gas (e.g. argon), mercury, halogen and tin. The lamp is of conventional design and comprises a quartz tube within a glass envelope. The filling may comprise one or more tin halides (e.g. stannous iodide and stannous bromide) or there may be an excess of tin. Three specific examples are given in the Specification.
Patent GB-861676-A (GB)
Title: Improvements relating to reinforced and prestressed concrete rafters
Inventor: JONES DAVID EUROF
IPC: E04B1/21
Filed: 1955-11-28
Abstract: 861,676. Reinforced concrete roof trusses. ISAAC, G. Feb. 28, 1957 [Nov. 28, 1955], No. 34055/55. Class 20(4) A joint between a lower end of an inclined reinforced or prestressed concrete rafter 11, Fig. 1, a tie bar 13 and a support for the rafter wherein the point of intersection P of the line of thrust T of the support with the axis of the tie bar is located below the extended neutral axis of the central part of the rafter, and in which the resultant of the forces exerted on the rafter 11 by the tie bar 13 and support exerts on the rafter a bending moment in the direction tending to bow the rafter upwardly between its ends thereby effecting reduction of the bending moment at the centre of the rafter. The rafter 11 may be part of a truss which may include a second rafter 12 meeting the rafter 11 in a ridge joint 16, which may comprise a resilient packing, and which is located below the intersection of the extended neutral axes of the central parts of the two rafters. The ridge joint also includes at least one tie bar 15 which may be secured by nuts and washers on its ends, Fig. 5 (not shown). The invention may also be applied to a northlight truss, Fig. 3, in which additional reduction of bending moment is effected by an extension 25 on the shorter rafter 25, substantially in line with the longer rafter 23. The tie bars 13, 26 are supported by hangers 14, 27 respectively.
Patent GB-776734-A (GB)
Title: Rack for storing or displaying bottles or jars
Inventor: MILLS WILLIAM HENRY GEORGE
IPC: A47F7/28
Filed: 1954-11-24
Abstract: 776,734. Bottle racks. MILLS BROS. (SHEFFIELD), Ltd. Nov. 23, 1955 [Nov. 24, 1954], No. 34108/54. Class 52 (3). A bottle rack comprises plates 16, 17, of zig-zag or other regular sinuous form providing alternating ridges and furrows, arranged in tiers on a stand so that the ridge 19 of a lower plate 17 is adjacent the furrow 20 of an upper plate 16 and a honeycomb structure of bottle compartments 18 is formed. The plates may have, as in Fig. 1, the furrow 20 of an upper plate resting directly on the ridge 19 of a lower plate or, as in Fig. 2, the furrows and ridges of adjacent plates spaced apart by members 34 with bifurcated ends. The stand has angled uprights 10 and a base 11 which may be tilted slightly upwardly, with vertically adjustable cross-pieces 14 on which the ends of the plates 16, 17 are supported.
Patent GB-794846-A (GB)
Title: Improvements in and relating to cutting boards, for food
IPC: A47J47/00
Filed: 1955-11-29
Abstract: 794,846. Slicing boards. WOODHOUSE, A. H. Nov. 29, 1956 [Nov. 29, 1955], No. 34125/55. Class 28 (2). A turntable 15 is provided in the surface of a cutting-board. The turntable may be supported in various ways, e.g. it may have a sleeve 18 in its underside resting on a pivot 18 on a cross-bar 17 or it may have one or three domed studs on its underside resting on a crossbar. In Fig. 10 the hole of the turntable has three inwardly-projecting brackets 22, Fig. 11, on which the turntable rests.
Patent GB-1481822-A (GB)
Title: Device for the processing of a synthetic thread
IPC: D02G1/02
Filed: 1974-08-02
Abstract: 1481822 Rotatable thread deflector ZINSER TEXTILMASCHINEN GmbH 2 Aug 1974 [2 Aug 1973] 34164/74 Headings DID and D1F A device for processing synthetic thread comprises first transportation means for conveying thread into a processing space, a rotatably mounted thread deflector for receiving the thread after it has passed through the space and for deflecting the thread through 180‹ and back into the space, second transport means for drawing the thread from the space after passing therethrough the second time, and drive means associated with the thread deflector and operable to reduce torque on the deflector exerted by thread movement, while assisting thread displacement in its direction of travel. Thread F, Fig. 1, is false twisted at 4 while passing over heater 3, and is shrunk or set while passing through heater 9. The thread is deflected back through heater 9, Fig. 2, by sleeve-like roller 12 on spindle 13 which is driven by turbine or electric motor 15. Roller 12 may be connected to the spindle, in which case the roller has a peripheral speed equal to the thread speed, or the roller may be rotatable relative to the spindle, in which case the spindle is driven at a rotational speed equal to that of the roller which is rotated by the thread. To thread the roller, longitudinal halves of the heater are opened on hinges 20, 21 and the roller and its drive are lowered on rod 18. Alternatively, Fig. 6, roller 12 deflects thread downwards over heater 41. Roller 12 is rotatable on or fixed to a shaft driven by belt 45, Fig. 7. To thread the roller the heater is swung aside by rod 44 and cranks 42, 43, and the roller is lowered down guide rod 48 using belt 50 while being driven by belt 45.
Patent GB-492730-A (GB)
Title: Improvements in and relating to protective systems for electric circuits
IPC: H02H9/08
Filed: 1936-12-14
Abstract: 492,730. Protective arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 14, 1936, No. 34298. Void. Convention date, Dec. 12, 1935. [Class 38 (iv)] In an ungrounded A.C. transmission system in which, on the occurrence of a ground fault, the unbalanced capacity current to earth is compensated by an inductance connected between the neutral point and earth, adequate compensation of the capacity current for all lengths of line in circuit is obtained by causing the inductance to vary through a range of values on the occurrence of a fault, at least one of which values is that which compensates the capacity current and clears the fault. A three-phase line is protected by an inductance 15 in the form of a transformer, a coil 20 of which is short-circuited over a full wave rectifier 18, 19 and an inductance 16. In this case initially the inductance of the coil 17 is high, but decreases after the occurrence of a fault at a rate dependent on the circuit constants due to D.C. flowing in the coil 20. At one of these decreasing values of inductance, the fault current is compensated. In a modification, the inductance is initially low and rises after the fault occurs. This is obtained by connecting the coil 20 through a Graetz connected rectifier to a condenser which draws a decreasing D.C. from the coil 20 on the occurrence of a fault.
Patent GB-950202-A (GB)
Title: Electric alarm clocks
IPC: G04C21/18
Filed: 1960-10-06
Abstract: 950,202. Electric clocks. SUNBEAM CORPORATION. Oct. 6, 1960 [Jan. 7, 1960], No. 34329/60. Heading G3T. The electric alarm clock described in Specification 892,124 is modified by providing a non- magnetic wedge member 58 for normally locking the vibrator 42. The wedge member 58 has a hook 58a which engages the alarm lever 52 which is controlled by the alarm cam mechanism.
Patent GB-1356973-A (GB)
Title: Locking devices
IPC: B60P7/13
Filed: 1971-07-22
Abstract: 1356973 Stud and socket fastenings CRANE FRUEHAUF TRAILERS Ltd 7 July 1972 [22 July 1971] 34402/71 Heading E2B A twist lock comprises a boss 11 and a stem 14 with a head 15 angularly but not axially movable relatively to the boss from a releasing to a retaining position by a handle and projection 33 on the handle preventing actuation thereof until the handle has been moved both linearly and angularly. The stem 14 passes through a cylindrical aperture in the boss 11. The cross sectional shape of the boss is similar to that of the base of the head so that turning the head to lie at right angles to the boss effects fastening of a container, in a socket of which the boss extends. The boss is secured to a plate 10 having spaced dependent plates 27, 28 through apertures in which and in the stem 14 a handle arm 25 extends. The projections 33 abut sides of an oval aperture 29 in the plate 27 preventing turning of the stem until a handle 26 is turned through a right angle and then pulled to displace the arm 25 and move the projections 33 through the aperture 29 against the action of a spring 36 which abuts a washer 37, in contact with a pin 35 in the arm 25, and an end of an enlargement of the aperture through the stem. Turning movement of the handle is limited by end portions 21, 22 of a pin 20 through the stem contacting a respective stop 23, 24 on the lower end of the boss.
Patent GB-884792-A (GB)
Title: Improvements relating to commercial motor vehicles
IPC: B60K5/02
Filed: 1960-10-07
Abstract: 884,792. Motor vehicles. DAIMLER-BENZ A.G. Oct. 7, 1960 [Oct. 8, 1959], No. 34464/60. Class 79(3). A liquid cooled internal combustion engine 17 is disposed in a commercial motor vehicle beneath the front seat 1 and the radiator 8, fan 10 and fan drive 11 and associated circulating pump 13 for the cooling medium are disposed separately from the engine at the very front of the vehicle such that the radiator and its accessory units are situated in front of the front axle while the engine is situated behind the front axle. The cooling medium is circulated through pipes 14 and 16, the pump 13 being driven by a flexible or double jointed shaft 18. The dynamo 20 is driven by a transmission 19. The leaf springs 20 are attached at 21 and 23, the latter being below or behind the centre of gravity of the engine.
Patent GB-630838-A (GB)
Title: Improvements in or relating to electric circuit interrupters having arc extinguishing means
IPC: H01H9/44
Filed: 1947-12-30
Abstract: 630,838. Arc-rupturing in switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Dec. 30, 1947, No. 34568. Convention date, Jan. 4. [Class 38(v)] An air-break circuit-breaker has a magnetic blow-out structure wherein the cross-sectional area of the core 43 is less than that of one of the pole shoes 36 or 37, the ratio preferably being about 80 per cent, although it may be anywhere between 50 and 85 per cent. On opening, clockwise movement of contact carrier 8 about pivot 9 causes the contacts to separate in the following order : contacts 6, 15, 17, then secondary contacts 24, 26, and finally arcing contacts 25, 27. The loop effect caused by terminal' studs 3, 18, and carrier 8 helps to move the arc upwards into the interrupting chamber 2, this movement being aided by a blast of air through a pipe 23 and caused by the downward movement of a cylinder 20 relatively to a piston, not shown, on a rod 21. One part of the arc then roots on arcing horn 30, the arc being in position 32. The magnetic blow-out structure then forces the arc into a chute 39, the structure comprising two parallel-connected coils 34 in series with the arc, and wound on the core 43, the laminated pole shoes 36, 37, extending on either side of the arc chute and having depending sub-pole pieces 42. The portion 44 of the arc is moved to the left into a transfer interrupting stack 47, having an arcing horn 54, by means of of magnetic plates 59, 60. The plates 40 of chute 39 and 48 of stack 47 have tapered slots which are slightly staggered (Figs. 2, 4, not shown), so as to lengthen the arcs. The end plates 67 of the chute 39 are shortened so as to cause the arc gases to diverge, as at 69, thereby reducing the possibility of flashover. The magnetic flux is preferably made to lag the arc current by a small angle, e.g., 10 degrees. This may be done by (a) resistance-shunting coils 34, (b) eddy-current losses in the magnetic circuit, or (c) shading coils 71.
Patent GB-1247759-A (GB)
Title: Block copolyesters, process for their manufacture and thermoplastic moulding compositions therefrom
IPC: C08G63/672
Filed: 1969-07-09
Abstract: 1,247,759. Block copolyester and thermoplastic moulding composition. FARBWERKE HOECHST A.G. 9 July, 1969 [9 July, 1968], No. 34595/69. Heading C3R. A block copolyester is derived from (a) at least one aromatic dicarboxylic acid and from 0-10% by wt. of an aliphatic dicarboxylic acid; (b) one or more aliphatic or cycloaliphatic diols; and (c) a polytetrahydrofuran diol (a polytetramethylene glycol) of m.wt. 300-500 and an hydroxyl number 357 to 22 in an amount to provide 0À5-15% of the structural units of the polyester. A thermoplastic moulding composition is formed from the polyester by admixture with, as nucleating agent, 0À05-1% by wt. of a finely divided inert solid material of grain size below 5 Á, the composition being formed into granules and coated with wax. The polyester may be prepared either by addition of the polytetrahydrofuran diol during the polyesterification reaction or by admixture of the diol with a polyester melt followed by re-esterification. Specified are: acids terephthalic with 0-10% of naphthalene dicarboxylic or adipic; diols-ethylene glycol with 0-10% of butanediol or 1,4-dimethylol cyclohexane; nucleating agents-talcum or other silicates e.g. china clay or aluminium silicates, metal oxides e.g. magnesium oxide, aluminium oxide or antimony trioxide, carbonates or fluorides.
Patent GB-490277-A (GB)
Title: Improvements in or relating to centrifugal apparatus for casting metal
IPC: B22D13/06
Filed: 1937-05-10
Abstract: 490,277. Casting-plants. SCHOELLERBLECKMANN STAHLWERKE AKT.-GES. May 10, 1937, No. 34606. Convention date, May 20, 1936. Divided out of 490,260. [Class 83 (i)] Casting-machines; moulds.-In a casting- machine as described in Specification 490,276, instead of a conical distributer the metal is supplied by a funnel 2 or an auxiliary ladle 14, Fig. 3, which is mounted, preferably removably, within the circle of the moulds 1. The funnel or ladle has a spout 3, preferably shaped to feed the metal in the direction of the inclination and rotation of the mould, and preferably has arms 6 to engage under the mould frame 7<1> when lifted off the driving plate 7<11>. The moulds, or the lower moulds when there is more than one tier, have projecting lips 9 which form an annular platform to receive the poured metal or this platform may be formed by an extension of the frame 7<1>. The funnel, if used, is fed from an auxiliary ladle 12 and this from a main ladle 13. Specification 490,275 also is referred to.
Patent GB-1326664-A (GB)
Title: Arrangement for sliding windows
IPC: E05F11/38
Filed: 1971-07-23
Abstract: 1326664 Sliding windows G BROSE [trading as METALLWERK MAX BROSE & CO] 23 July 1971 [27 July 1970] 34695/71 Headings E1J and E2M  A guide means for a sliding window comprises an extruded rail 10 guiding a drivable slipper 14 attached to a pane 12. The slipper has guide bosses 28 or rollers (58) and is attached to drive element 18 guided in the rail. The rail is of metal or plastics and the guide surfaces (22, 24, 26) are provided with plastics flocking.
Patent GB-1261473-A (GB)
Title: Thermally insulating covering for pipes
Inventor: KAUFHOLD HARALD
IPC: F16L59/10
Filed: 1970-07-17
Abstract: 1,261,473. Band clamps. H. KAUFHOLD. 17 July, 1970 [20 Aug., 1969], No. 34839/70. Heading E2B. [Also in Division F2] A thermally insulating pipe covering comprises an insulating layer 3, e.g. of mineral wool, secured, e.g. adhered, to a casing 4, which is longitudinally split, longitudinal edge 5 being provided with spaced hooks 8 or barbed tongues for insertion through spaced slits 7 formed in the other longitudinal edge 7. The casing may be of p.v.c., metal, leather board or bitumenized pulp board. As shown, the hooks or tongues are formed from the sheet forming the casing, but they may be constructed in the form of a hook bar which is then secured to the casing. The casing extends beyond the insulation at 9 for overlapping an adjacent covering, Fig. I (not shown). Each slot may be cut obliquely through the casing material, as at 7a, so that casing section 10 can be moved to its broken line position to facilitate removal of hook 8. Various alternative forms of hooks or barbed tongues with their associated slits are described, Figs. 4-10 (not shown). The slits may be longer than the corresponding axial dimension of the tongues or hooks to allow the covering some flexibility when fastened around a pipe.
Patent GB-777609-A (GB)
Title: Process for the production of terephthalic acid and of alkali metal salts and other derivatives thereof
IPC: C07C51/41
Filed: 1954-12-02
Abstract: An alkali metal salt of terephthalic acid is obtained by heating an alkali metal salt of benzoic acid at a high temperature in the presence of cadmium or a compound thereof as catalyst.  The reaction is preferably carried out by heating potassium benzoate to a temperature above 340 DEG  C., with agitation in an autoclave and in the presence of an inert gas.  The starting material may be mixed with inert materials such as sand or inert salts, e.g. potassium carbonate, sulphate or chloride.  The reaction product which is obtained together with quantities of benzene, may be worked up by dissolving it in water, filtering, precipitating the organic acids from solution and removing the benzoic acid by extraction with water to leave an insoluble residue of terephthalic acid.  In examples: (1) potassium benzoate admixed with potassium carbonate and cadmium oxide is heated in an autoclave in the presence of carbon dioxide or nitrogen; (2) potassium benzoate is heated in an autoclave in the presence of carbon dioxide and cadmium fluoride, phthalate or benzoate; (3) sodium benzoate admixed with sodium carbonate and cadmium oxide is heated in an autoclave in the presence of carbon dioxide. Specification 744,721 is referred to.